FreeBSD-main-amd64-test - Build #24675 - Still Unstable

FreeBSD-main-amd64-test - Build #24675 (2a121b97e9673ff37062c9fa026eee969940d2e2) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24675/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24675/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24675/console

Status explanation:
"Unstable" - some tests are suspected being broken by the following changes
"Still Unstable" - the failing test cases have not been fixed by these
                   following changes and this is a notification to note that
                   these changes have not been fully tested by the CI system

Change summaries:
(Those commits are likely but not certainly responsible)

7cbaab712f98f868a1f069c00bdf705f77b06f6a by kp:
pf: remove unused struct definition

24c0058a9b594bcc4f207924ca60d891c87fdfde by kp:
pf tests: test reassembly with dummynet

3f9a6e0b85d418b49b3a3b859b9992e407cb66d5 by kp:
pf tests: dummynet + nat fragmentation test

6137b5f7b8c183ee8806d79b3f1d8e5e3ddb3df3 by karels:
Increase the size of riscv GENERICSD images to 6 GB

503f72a828c7d0d938ec73ffbf62406038c69d47 by kib:
ncl_bioread(): check for vp->v_object before accessing it

61b0092be751b8241b65cc14e4167d431f1e5ad8 by markj:
condvar: Clean up condvar.h a bit

a5ef95cd228e43bcc459a5c8a9911e57888ba5fd by markj:
condvar: Fix a user-after-free in _cv_wait() when ktrace is enabled

ec13a838e6857585d3c3db70a0a67e337248ec28 by imp:
man: avoid unportable use of utilities

2a121b97e9673ff37062c9fa026eee969940d2e2 by imp:
find: Allow '/' to be used with -perm for GNU compatibility



The failed test cases:

2 tests failed.
FAILED:  sys.kern.shutdown_dgram.unblock

Error Message:
Test case body timed out

FAILED:  sys.kern.unix_passfd_dgram.send_and_shutdown

Error Message:
/usr/src/tests/sys/kern/unix_passfd_test.c:431: openfiles() == nfiles - 1 not met